Tinnitus is a common problem for which there is no universally effective treatment. The best available estimates indicate that 10 - 15% of adults report having tinnitus symptoms, but only 20% of those who report tinnitus suffer from it and subsequently seek treatment. Only formally reported by the U.S. Department of Veterans Affairs (VA), the economic impact of tinnitus is thought to be substantial.

The VA reported in 2004 that 289,159 veterans received a disability award for their tinnitus...